ORA-63392
Flashback queries with a query SCN or timestamp earlier than when the table was enabled for Timehouse (flashback_query_type "initial_load_value") are not supported.
        - flashback_query_type: SCN or timestamp based flashback query.
- initial_load_value: Initial load SCN or timestamp.
Cause
An attempt is being made to perform a flashback query using a query SCN or timestamp that is earlier than when the table was enabled for Timehouse.
Action
Retry the flashback query using a query SCN or timestamp that is greater than or equal to the SCN or timestamp when Timehouse was enabled.